450111240 has 48 divisors (see below), whose sum is σ = 1462862700. Its totient is φ = 120029568.

The previous prime is 450111239. The next prime is 450111251. The reversal of 450111240 is 42111054.

It can be written as a sum of positive squares in 2 ways, for example, as 385179876 + 64931364 = 19626^2 + 8058^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 624795 + ... + 625514.

Almost surely, 2^450111240 is an apocalyptic number.

450111240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

450111240 is an abundant number, since it is smaller than the sum of its proper divisors (1012751460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

450111240 is a wasteful number, since it uses less digits than its factorization.

450111240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250326 (or 1250319 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 450111240 is about 21215.8252255245. The cubic root of 450111240 is about 766.3725710884.

Adding to 450111240 its reverse (42111054), we get a palindrome (492222294).

The spelling of 450111240 in words is "four hundred fifty million, one hundred eleven thousand, two hundred forty".